HMS E47 was an E-class submarine launched by Fairfield, Govan for the Royal Navy and completed by William Beardmore, Dalmuir.

British E-class submarines had fuel capacities of 50 long tons (51 t) of diesel and ranges of 3,255 miles (5,238 km; 2,829 nmi) when travelling at 10 knots (19 km/h; 12 mph).

E47 was armed with a 12-pounder 76 mm (3.0 in) QF gun mounted forward of the conning tower.

Following the resumption of German coastal shipping between Heligoland Bight and Rotterdam, four E-class submarines were sent to intercept.

The wreck of E47, found in 2002 by Divingteam Noordkaap from Vlieland, lies about 6 nmi (6.9 mi; 11 km) northwest of Texel.